Collectively, these parts are called the vulva. Rich with nerves, the vulva can provide sexual pleasure when properly stimulated. The vagina is a muscular tube about three to four inches long that ends the birth canal. The vaginal opening is visible from the outside but it is protected by the labia when a woman stands and during most activities. The labia majora are two folds of skin that extend from the front of the vaginal opening to the back of it.
This small sexual organ at the top of the Sexual organs diagrams at the junction of the labia minora appears outside the folds of skin like a small pink button. There is, however, no external indication of the sex of an embryo during the first eight weeks of its life within the uterus. Skin Subcutaneous tissue Breast Mammary gland. If semen is ejaculated into a female's vagina, millions of sperm "swim" up from the vagina through the cervix and uterus Florida marlins mermaid meet the egg in the fallopian tube. In other projects Wikimedia Commons.
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Round ligament of uterus. Vestibular bulbs. They arise from the genital tubercle that forms anterior to the Hasselhoff wife children folds proliferating mesenchymal cells around the cloacal membrane. Uteruscervixvagina . This fluid has another function besides making it easier for the penis to slide in and out of the vagina. The caudal aspect of the cloacal folds organ subdivides into the posterior anal folds and the anterior urethral folds. Processus vaginalis. These hormones trigger the processes needed to orgas a baby. This article needs additional citations for verification. Views Read Edit View history. This list of related male and female reproductive organs shows how the male and female reproductive organs and the development of the reproductive Sexual organs diagrams are related, sharing a common developmental path. Between the labia majora are Sexual organs diagrams labia minoratwo folds of skin that also extend down from the clitoris and around the vaginal opening. This makes them biological homologues.
When a baby begins to grow, the different parts of its body such as the head, arms, legs and chest grow at different rates.
- Collectively, these parts are called the vulva.
- By Sabine Walter, Pierre A.
- This list of related male and female reproductive organs shows how the male and female reproductive organs and the development of the reproductive system are related, sharing a common developmental path.
Human reproductive system , organ system by which humans reproduce and bear live offspring. Provided all organs are present, normally constructed, and functioning properly, the essential features of human reproduction are 1 liberation of an ovum , or egg , at a specific time in the reproductive cycle, 2 internal fertilization of the ovum by spermatozoa, or sperm cells, 3 transport of the fertilized ovum to the uterus , or womb, 4 implantation of the blastocyst, the early embryo developed from the fertilized ovum, in the wall of the uterus, 5 formation of a placenta and maintenance of the unborn child during the entire period of gestation , 6 birth of the child and expulsion of the placenta, and 7 suckling and care of the child, with an eventual return of the maternal organs to virtually their original state.
For this biological process to be carried out, certain organs and structures are required in both the male and the female. The source of the ova the female germ cells is the female ovary ; that of spermatozoa the male germ cells is the testis. In females, the two ovaries are situated in the pelvic cavity; in males, the two testes are enveloped in a sac of skin, the scrotum , lying below and outside the abdomen.
Besides producing the germ cells, or gametes , the ovaries and testes are the source of hormones that cause full development of secondary sexual characteristics and also the proper functioning of the reproductive tracts.
These tracts comprise the fallopian tubes , the uterus , the vagina , and associated structures in females and the penis , the sperm channels epididymis, ductus deferens , and ejaculatory ducts , and other related structures and glands in males.
The function of the fallopian tube is to convey an ovum, which is fertilized in the tube, to the uterus, where gestation development before birth takes place. The function of the male ducts is to convey spermatozoa from the testis, to store them, and, when ejaculation occurs, to eject them with secretions from the male glands through the penis. At copulation, or sexual intercourse , the erect penis is inserted into the vagina , and spermatozoa contained in the seminal fluid semen are ejaculated into the female genital tract.
Spermatozoa then pass from the vagina through the uterus to the fallopian tube to fertilize the ovum in the outer part of the tube. Females exhibit a periodicity in the activity of their ovaries and uterus, which starts at puberty and ends at the menopause. The periodicity is manifested by menstruation at intervals of about 28 days; important changes occur in the ovaries and uterus during each reproductive, or menstrual, cycle. Periodicity, and subsequently menstruation, is suppressed during pregnancy and lactation.
This articles describes the organs, both male and female, that are involved in human reproduction. The reproductive process itself is covered in other articles.
For a description of the stages of labour and delivery, see parturition. For the development of the unborn child during gestation, see human embryology.
For coverage of the many diseases and disorders that can affect the reproductive organs, see reproductive system disease. The sex of a child is determined at the time of fertilization of the ovum by the spermatozoon. The differences between a male and a female are genetically determined by the chromosomes that each possesses in the nuclei of the cells.
Once the genetic sex has been determined, there normally follows a succession of changes that will result, finally, in the development of an adult male or female. There is, however, no external indication of the sex of an embryo during the first eight weeks of its life within the uterus.
This is a neutral or indifferent stage during which the sex of an embryo can be ascertained only by examination of the chromosomes in its cells. The next phase, one of differentiation, begins first in gonads that are to become testes and a week or so later in those destined to be ovaries. Embryos of the two sexes are initially alike in possessing similar duct systems linking the undifferentiated gonads with the exterior and in having similar external genitalia, represented by three simple protuberances.
The embryos each have four ducts, the subsequent fate of which is of great significance in the eventual anatomical differences between men and women. Two ducts closely related to the developing urinary system are called mesonephric, or wolffian, ducts.
In males each mesonephric duct becomes differentiated into four related structures: a duct of the epididymis , a ductus deferens, an ejaculatory duct , and a seminal vesicle. In females the mesonephric ducts are largely suppressed. Differentiation also occurs in the primitive external genitalia, which in males become the penis and scrotum and in females the vulva the clitoris , labia, and vestibule of the vagina.
At birth the organs appropriate to each sex have developed and are in their adult positions but are not functioning. Various abnormalities can occur during development of sex organs in embryos, leading to hermaphroditism , pseudohermaphroditism , and other chromosomally induced conditions.
During childhood until puberty there is steady growth in all reproductive organs and a gradual development of activity. Puberty marks the onset of increased activity in the sex glands and the steady development of secondary sexual characteristics.
In males at puberty the testes enlarge and become active, the external genitalia enlarge, and the capacity to ejaculate develops. Marked changes in height and weight occur as hormonal secretion from the testes increases. The larynx , or voice box, enlarges, with resultant deepening of the voice. Certain features in the skeleton, as seen in the pelvic bones and skull, become accentuated.
The hair in the armpits and the pubic hair becomes abundant and thicker. Facial hair develops, as well as hair on the chest, abdomen, and limbs.
Hair at the temples recedes. Skin glands become more active, especially apocrine glands a type of sweat gland that is found in the armpits and groin and around the anus. In females at puberty, the external genitalia enlarge and the uterus commences its periodic activity with menstruation.
The breasts develop, and there is a deposition of body fat in accordance with the usual contours of the mature female. Growth of axillary armpit and pubic hair is more abundant, and the hair becomes thicker. Human reproductive system. Article Media. Info Print Print. Table Of Contents. Submit Feedback. Thank you for your feedback. Introduction Development of the reproductive organs The male reproductive system External genitalia The penis The scrotum The testes Structures of the sperm canal Accessory organs The prostate gland, seminal vesicles, and bulbourethral glands Ejaculatory ducts The female reproductive system External genitalia Internal structures The vagina The uterus Uterine structure The endometrium in the menstrual cycle Blood supply and innervation The fallopian tubes The ovaries Ovarian structure Ovulation Blood supply and innervation.
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Development of the reproductive system. We love a good nickname as much as the next person, but for many of us with a vagina, these nicknames are pretty much cover-ups for a complex and…. A healthy vagina tastes and smells like a healthy vagina. Between the labia majora are the labia minora , two folds of skin that also extend down from the clitoris and around the vaginal opening. Labioscrotal folds.
Sexual organs diagrams. Human Body Anatomy Diagrams
Chapter 5. MALE AND FEMALE REPRODUCTIVE SYSTEMS
Collectively, these parts are called the vulva. Rich with nerves, the vulva can provide sexual pleasure when properly stimulated. The vagina is a muscular tube about three to four inches long that ends the birth canal. The vaginal opening is visible from the outside but it is protected by the labia when a woman stands and during most activities. The labia majora are two folds of skin that extend from the front of the vaginal opening to the back of it. The outer surfaces of the folds have darker-colored skin and stronger hairs, while the inner folds are smoother.
The labia majora join to form the cleft shape of the female genitals. This is also known as the pudendal cleft or the cleft of Venus, after the Roman goddess of love. Between the labia majora are the labia minora , two folds of skin that also extend down from the clitoris and around the vaginal opening. These vary in size from woman to woman. The clitoris is a crucial element for sexual arousal in most women.
This small sexual organ at the top of the vagina at the junction of the labia minora appears outside the folds of skin like a small pink button. The shaft under the skin has erectile tissue, which becomes engorged with increased blood flow. The clitoris is a very sensitive area when stimulated. Most women cannot achieve orgasm without direct stimulation to the clitoris. The outer female genitals also include the urethra. Located between the vaginal opening and the frontal connection of the labia minora, the urethral opening is where a woman expels urine from her body.
A healthy vagina tastes and smells like a healthy vagina. That is to say, it might be sweet or sour, metallic or bitter, salty or sharp. It might even…. The vagina and vulva are important but often misunderstood parts of the human body. We're here to clear up all those vagina myths and set the facts…. A vaginal self-exam is a smart way to get to know your own body. Yoni massage therapy aims to help you feel more comfortable with your body and gain a better understanding of what feels good to you.
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